A columnar sampler for bottom sediment of rivers, lakes and reservoirs

Abstract

The invention discloses a columnar sampler for river and lake bottom mud, which comprises a sampling device, a metal sleeve, a metal counterweight part, a tail balance device and a tail device; the cutting head of the sampling column is connected to the bottom end of the plastic pipe of the sampling column, and the sampling column The top of the plastic pipe is connected to the tail device, and the lower metal casing, metal counterweight parts, and upper metal casing are fitted outside the plastic pipe of the sampling column in sequence from bottom to top; the diversion fin main frame of the tail balance device is fitted on the upper metal sleeve On the upper part of the tube, the tail fins are evenly distributed on it; one end of the pull rod of the tail device is connected to the hook hammer bracket through the hook hammer, and the other part is connected to the rubber stopper through the rubber stopper bracket; the rubber stopper is connected to the pull rod between the top ends of the rubber stopper bracket Install the spring; the rubber stopper bracket is fixed on the tail main frame, and the legs of the hook hammer bracket are connected to the rubber stopper bracket through the iron ring fixed on the rubber stopper bracket; the tail main frame is connected to the plastic pipe of the sampling column and the metal casing of the upper section upper end. The invention has the characteristics of being detachable, portable, high sampling efficiency and easy to take out samples.

Description

technical field [0001] The invention belongs to the technical field of sampling tools, in particular to a columnar sampler used for collecting bottom mud of rivers, lakes and reservoirs. Background technique [0002] In environmental monitoring, it is usually necessary to sample and analyze the sediment of rivers and lakes to understand the composition of sediment at different depths, the content of organic matter or pollutants, etc., in order to analyze the environmental conditions of rivers and lakes. Sediment sampling is a highly technical monitoring task, but there are not many types of sediment columnar samplers, and the sampling efficiency is not high, it is difficult to take out samples, and the samples are squeezed, resulting in large detection errors and heavy weight. , Inconvenient to carry and many other problems. At the same time, for the water environment with fast water flow and strong fluidity, when the sampler is thrown, the sampler is tilted, inserted into ...

AI Technical Summary

Problems solved by technology

Although the above patents have achieved the purpose of sampling to a certain extent, they also have the same defects. It is difficult to ensure that the sampler enters the water vertically into the sediment, it is prone to tilt, the depth of entry is difficult to control, and it is difficult to adjust for different water environments. , it is easy to cause inaccurate sampling

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